Tevatron BPM Upgrade Stephen Wolbers for the Tevatron

Tevatron BPM Upgrade Stephen Wolbers (for the Tevatron BPM Upgrade Project) All Experimenters Meeting January 24, 2005 Stephen Wolbers All Experimenters Meeting

Outline • Project description and scope. • Current Status and Upgrade BPM Performance. • Plan for final installation and commissioning. January 24, 2005 Stephen Wolbers All Experimenters Meeting 2

Te. V Beam Position Monitor (BPM) Upgrade Project • Joint CD/AD project. – Began in August 2003. • Key contributors and contributions: – Jim Steimel: Technical Coordinator – Mike Martens: Specifications and Tevatron requirements, integration. – Luciano Piccoli, Margaret Votava: Front-end software – Vince Pavlicek, Ken Treptow, Bill Haynes: Engineering – Dehong Zhang: Testing, integration – Tim Kasza: Hardware testing and acceptance, tracking – Rob Kutschke: Analysis, calibration – Brian Hendricks: Controls interface, console applications. – Bob Webber: Technical guidance and instrumentation experience and project management. – Bakul Banerjee: Project assistant January 24, 2005 Stephen Wolbers All Experimenters Meeting 3

Specifications/Reasons for upgrade • Old hardware was not accurate, precise or reliable enough for the Tevatron, nor was it able to measure pbar positions. • New system goals/requirements: – Stable, accurate, precise measurements • Aiming for <10 micron (1 sigma) precision for best proton position measurement • Current system has 150 micron least significant bit – Reliable hardware and software – Software to collect and use the data. • More sophisticated data analysis is not part of the project (e. g. , lattice measurements) – Measurement of antiproton positions (new capability) • Requires twice as many electronics channels January 24, 2005 Stephen Wolbers All Experimenters Meeting 4

Te. V BPM Upgrade Scope • New electronics. • Front-end software. • Data to the online/controls system. • Modified applications to use the new data. • The pickups in the accelerator will not be modified! • Both ends (p and pbar) of the pickups will be instrumented. Pickups 240 pickups January 24, 2005 Electronics/VME 960 channels Stephen Wolbers All Experimenters Meeting Controls/Offline 5

Block Diagram – vertical BPM 53 MHz Bandpass Filter +attenuator Pickups in tunnel Signal Processing A/D DDC FPGA Filter Board January 24, 2005 Echotek Stephen Wolbers All Experimenters Meeting One pair for p, one for pbar MVME 2400 Controls, Plots, Applications 6

Hardware Components • Echotek Digital Signal Receiver (150) – Commercial 8 channel 80 MHz 14 bit ADC, DDC, FPGA – Exact or similar boards are common to Recycler, Transfer Lines, NUMI, MI BPM projects • Front-end Filter Board (150) – 53 MHz band-pass filter, 10 or 20 d. B attenuator, relays for diagnostic signal – Designed by CD • Timing Board (38) – Provides clocks and triggers for Echotek – Provides 53 MHz diagnostic signals – Designed by CD • MVME Processors, VME subracks, Crate monitoring, cables, test stands, test signals, controls network. January 24, 2005 Stephen Wolbers All Experimenters Meeting 7

Software Overview • Front-end – Processes Echotek output to provide • Closed orbit • Turn by turn • First turn – Manages data collection and modes of operation • Online/console applications – Moves data into controls system and applications, libraries and databases. • Offline/calibration – Provides necessary deconvolution (pbar) and corrections to ensure accuracy and precision of the system. – pbar measurements are available at the front-end. January 24, 2005 Stephen Wolbers All Experimenters Meeting 8

Documentation • Requirements, specifications, designs, PRRs, test plans, as-builts, manuals, MOUs • 183 documents in Beams doc. DB as of 1/23/05. – – – All of the above, plus: Technical memos Review reports Meeting minutes Talks Data analysis • Web pages, mailing lists, etc. January 24, 2005 Stephen Wolbers All Experimenters Meeting 9

Tev BPM Current Status • Essentially all hardware is hand, including spares: – – – 150 Echotek digital receiver boards. 150 Front-end filter boards. 38 Timing boards. 31 Crate controllers (MVME 2400) Crates, cables, panels. • All cabling from tunnel to service buildings (27) is in place. • Space has been identified in all of the service buildings for electronics installation. – In a few cases the old system will have to be removed to make room for the new one. – The BLM electronics/readout system will remain in place. January 24, 2005 Stephen Wolbers All Experimenters Meeting 10

Timing Board January 24, 2005 Production Board Stephen Wolbers All Experimenters Meeting 11

Filter Board • 8 channels • 53 MHz bandpass filter • Attenuation Circuit • Relays/53 MHz diagnostic signal • Shielding Production Board January 24, 2005 Stephen Wolbers All Experimenters Meeting 12

Echotek Board January 24, 2005 Production Board Stephen Wolbers All Experimenters Meeting 13

Current Status • A 3 system was constructed in FCC 3 and installed in A 3 on November 23. • Currently commissioning closed orbit, TBT, first turn and pbar measurements. Many things have been checked, including scale, polarity, resolutions, pbar measurements, system reliability and stability. Scale Check January 24, 2005 Stephen Wolbers All Experimenters Meeting 14

Recent Store (Monday 1/17/05) Vertical 500 microns Polarity problem? Or expected motion? January 24, 2005 Stephen Wolbers All Experimenters Meeting 15

Same store - horizontal 500 microns January 24, 2005 Stephen Wolbers All Experimenters Meeting 16

p and pbar positions during 1/17/05 store Early results. Still need to Analyze to see If it makes Sense. January 24, 2005 Stephen Wolbers All Experimenters Meeting 17

P and pbar resolutions (closed orbit) during 1/17/05 store Horizontal ~20 -25 mm (thought to be due to beam motion) Vertical ~10 -15 mm January 24, 2005 Stephen Wolbers All Experimenters Meeting 18

Schedule/Plan • The plan is to commission houses one at a time (so as not to interfere with Tevatron operations) and to do so as quickly as possible. – Proposal for commissioning order: • A 3, B 3, C 3, D 3, E 3, F 2, B 0, D 0, A 2, B 2, C 2, D 2, E 2, A 4, B 4, C 4, D 4, E 4, A 1, B 1, C 1, D 1, E 1, A 0, F 3, F 4, F 1 • Step 1: Finish commissioning A 3 and get signoff from Tevatron Department • Week 1: B 3 • Week 2: C 3 • Two or three houses per week after that • Finish in April, 2005. January 24, 2005 Stephen Wolbers All Experimenters Meeting 19

Summary • The Te. V BPM Upgrade project is moving to final commissioning of all 27 houses, replacing the old system with a more modern, reliable, and precise system. • This has been made possible by the efforts of many people (~35 individuals) from CD and AD who contributed over the past 1. 5 years. January 24, 2005 Stephen Wolbers All Experimenters Meeting 20

Backup Slides January 24, 2005 Stephen Wolbers All Experimenters Meeting 21

Effort January 24, 2005 Stephen Wolbers All Experimenters Meeting 22

VME Crate Layout • • • CPU • • • ADCDigit al Boards. R TGFiming Generator eceiver s PMC UCD • January 24, 2005 Tevatron Filter Bboards Stephen Wolbers All Experimenters Meeting 23

Results from A 3 system – closed orbit, complete store January 24, 2005 Stephen Wolbers All Experimenters Meeting 24

A 3 Result – Turn-by-turn and closed orbit comparison January 24, 2005 Stephen Wolbers All Experimenters Meeting 25

A 3 Results-TBT resolution January 24, 2005 Stephen Wolbers All Experimenters Meeting 26

Problems/Issues/Recent Progress • We must commission the A 3 BPM system before moving into commissioning of the other 27 houses. • Major work to debug and solve issues related to: – – Timing and triggers Echotek board processing Front-end software Applications “seeing” new data January 24, 2005 Stephen Wolbers All Experimenters Meeting 27

A 3 Results-TBT resolution Caveat: still being debugged Bob Webber: Presentation of TBT measurements is OK, but should be qualified as data from a system not yet well tested, characterized, or optimized even in controlled conditions. January 24, 2005 Stephen Wolbers All Experimenters Meeting 28

A 3 Results-TBT resolution Caveat: still being debugged • Good: – 8000 turns – Not completely crazy • Bad: – Still some phase/timing issues – Position correct? January 24, 2005 Stephen Wolbers All Experimenters Meeting 29